Disk Operating System (DOS) Question:
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UNIX operating system is a(n):

a. Time sharing operating system
b. Multi-user operating system
c. Multi-tasking operating system
d. All of the above

Answer:

d. All of the above

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What is the full form of NTFS:

a. New Technology File System
b. New Technical File System
c. New Technician File System
d. None of the above		The OS used to operate the mobile phone is a:

a. Smart card OS
b. Embedded OS
c. Multi user OS
d. None of above